EP 3930019 A1 20211229 - LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING SAME
Title (en)
LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING SAME
Title (de)
LICHTEMITTIERENDE VORRICHTUNG UND ELEKTRONISCHE VORRICHTUNG DAMIT
Title (fr)
DISPOSITIF ÉLECTROLUMINESCENT ET APPAREIL ÉLECTRONIQUE LE COMPRENANT
Publication
Application
Priority
KR 20200076759 A 20200623
Abstract (en)
A light-emitting device includes: a first electrode; a second electrode; m emission units between the first electrode and the second electrode; and m-1 charge generation layer(s), each located between two adjacent emission units, and including m-1 n-type charge generation layer(s) and m-1 p-type charge generation layer(s). The m emission units each include a hole transport region, an emission layer, and an electron transport region. A first hole transport region in a first emission unit closest to the first electrode may include a hole transfer layer and a hole injection layer and/or a hole transport layer. The hole transfer layer may be a single layer consisting of an electron-transporting compound including a phosphine oxide group (P=O), a phosphine sulfide group (P=S), a π electron-deficient nitrogen-containing C<sub>1</sub>-C<sub>60</sub> cyclic group, or any combination thereof. A highest occupied molecular orbital (HOMO) energy level of the hole transfer layer may be about -6.0 eV to about -5.3 eV.
IPC 8 full level
H01L 51/50 (2006.01); H01L 51/00 (2006.01); H01L 51/52 (2006.01)
CPC (source: CN EP KR US)
H10K 50/11 (2023.02 - CN); H10K 50/115 (2023.02 - KR); H10K 50/13 (2023.02 - KR); H10K 50/15 (2023.02 - CN KR); H10K 50/167 (2023.02 - EP); H10K 50/19 (2023.02 - EP); H10K 85/60 (2023.02 - KR); H10K 85/615 (2023.02 - CN KR); H10K 85/624 (2023.02 - US); H10K 85/626 (2023.02 - CN EP US); H10K 85/631 (2023.02 - KR); H10K 85/654 (2023.02 - CN EP KR US); H10K 85/657 (2023.02 - CN); H10K 85/6572 (2023.02 - CN EP KR US); H10K 85/6574 (2023.02 - CN); H10K 50/11 (2023.02 - US); H10K 50/15 (2023.02 - US); H10K 50/16 (2023.02 - US); H10K 50/17 (2023.02 - CN EP KR US); H10K 50/18 (2023.02 - US); H10K 50/181 (2023.02 - CN EP KR); H10K 50/19 (2023.02 - US); H10K 2101/10 (2023.02 - US); H10K 2101/20 (2023.02 - EP); H10K 2101/30 (2023.02 - EP US); H10K 2101/40 (2023.02 - CN EP KR); H10K 2102/331 (2023.02 - KR)
Citation (search report)
- [XI] US 2017294587 A1 20171012 - KIM YOUNSUN [KR], et al
- [XI] US 2008246395 A1 20081009 - NAKAI TOSHIMITSU [JP], et al
- [XI] US 2015357593 A1 20151210 - GUNJI MASAKAZU [JP], et al
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3930019 A1 20211229; CN 113838988 A 20211224; KR 20220000002 A 20220103; US 2021408387 A1 20211230
DOCDB simple family (application)
EP 21180442 A 20210618; CN 202110658571 A 20210615; KR 20200076759 A 20200623; US 202117351073 A 20210617